package com.qg.service.impl;

import com.alibaba.dubbo.config.annotation.Reference;
import com.alipay.api.AlipayClient;
import com.alipay.api.DefaultAlipayClient;
import com.alipay.api.internal.util.AlipaySignature;
import com.alipay.api.request.AlipayTradePagePayRequest;
import com.qg.config.AlipayConfig;
import com.qg.pojo.QgGoods;
import com.qg.pojo.QgOrder;
import com.qg.service.LocalAlipayService;
import com.qg.service.QgGoodsService;
import com.qg.service.QgOrderService;


import javax.servlet.http.HttpServletRequest;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;

public class LocalAlipayServiceImpl implements LocalAlipayService {
    @Reference
    private QgOrderService qgOrderService;
    @Reference
    private QgGoodsService qgGoodsService;
    @Override
    public String getPay(String orderNo) throws Exception {
        Map<String,Object> param=new HashMap<>();
        param.put("orderNo",orderNo);
        List<QgOrder> qgOrderList=qgOrderService.getQgOrderListByMap(param);
        QgGoods qgGoods=qgGoodsService.getQgGoodsById(qgOrderList.get(0).getId());
        //获得初始化的AlipayClient
        AlipayClient alipayClient = new DefaultAlipayClient(AlipayConfig.getGatewayUrl(), AlipayConfig.getApp_id(), AlipayConfig.getMerchant_private_key(), "json", AlipayConfig.getCharset(), AlipayConfig.getAlipay_public_key(), AlipayConfig.getSign_type());

        //设置请求参数
        AlipayTradePagePayRequest alipayRequest = new AlipayTradePagePayRequest();
        alipayRequest.setReturnUrl(AlipayConfig.getReturn_url());
        alipayRequest.setNotifyUrl(AlipayConfig.getNotify_url());

        //商户订单号，商户网站订单系统中唯一订单号，必填
        String out_trade_no =orderNo;
        //付款金额，必填
        String total_amount = qgOrderList.get(0).getAmount().toString();
        //订单名称，必填
        String subject = qgGoods.getGoodsName();
        //商品描述，可空
//        String body = new String(request.getParameter("WIDbody").getBytes("ISO-8859-1"),"UTF-8");

        alipayRequest.setBizContent("{\"out_trade_no\":\""+ out_trade_no +"\","
                + "\"total_amount\":\""+ total_amount +"\","
                + "\"subject\":\""+ subject +"\","
//                + "\"body\":\""+ body +"\","
                + "\"product_code\":\"FAST_INSTANT_TRADE_PAY\"}");

        //若想给BizContent增加其他可选请求参数，以增加自定义超时时间参数timeout_express来举例说明
        //alipayRequest.setBizContent("{\"out_trade_no\":\""+ out_trade_no +"\","
        //		+ "\"total_amount\":\""+ total_amount +"\","
        //		+ "\"subject\":\""+ subject +"\","
        //		+ "\"body\":\""+ body +"\","
        //		+ "\"timeout_express\":\"10m\","
        //		+ "\"product_code\":\"FAST_INSTANT_TRADE_PAY\"}");
        //请求参数可查阅【电脑网站支付的API文档-alipay.trade.page.pay-请求参数】章节

        //请求
        String result = alipayClient.pageExecute(alipayRequest).getBody();

        //输出

        return result;
    }

    @Override
    public String returnUrl(HttpServletRequest request) throws Exception {
        //获取支付宝GET过来反馈信息
        Map<String,String> params = new HashMap<String,String>();
        Map<String,String[]> requestParams = request.getParameterMap();
        for (Iterator<String> iter = requestParams.keySet().iterator(); iter.hasNext();) {
            String name = (String) iter.next();
            String[] values = (String[]) requestParams.get(name);
            String valueStr = "";
            for (int i = 0; i < values.length; i++) {
                valueStr = (i == values.length - 1) ? valueStr + values[i]
                        : valueStr + values[i] + ",";
            }
            //乱码解决，这段代码在出现乱码时使用
            valueStr = new String(valueStr.getBytes("ISO-8859-1"), "utf-8");
            params.put(name, valueStr);
        }

        boolean signVerified = AlipaySignature.rsaCheckV1(params, AlipayConfig.alipay_public_key, AlipayConfig.charset, AlipayConfig.sign_type); //调用SDK验证签名

        //——请在这里编写您的程序（以下代码仅作参考）——
        if(signVerified) {
            //商户订单号
            String out_trade_no = new String(request.getParameter("out_trade_no").getBytes("ISO-8859-1"),"UTF-8");

            //支付宝交易号
            String trade_no = new String(request.getParameter("trade_no").getBytes("ISO-8859-1"),"UTF-8");

            //付款金额
            String total_amount = new String(request.getParameter("total_amount").getBytes("ISO-8859-1"),"UTF-8");

            return "trade_no:"+trade_no+"<br/>out_trade_no:"+out_trade_no+"<br/>total_amount:"+total_amount;
        }else {
            return "验签失败";
        }

    }
}
